Laser flashlight in general, the price is related to the brand. Miscellaneous brand is very cheap, but the quality is not good to say, the brand of the regular a little bit, there is a guarantee. 300MW, may be the genuine brand to 500 or more, the better to nearly a thousand or so. Miscellaneous brand is not good to say, how cheap there are. Depends on the friend's personal choice.
I am doing flashlights, titanium light lighting, you can look at.